SIRIUS SC-VDOC1 Car Kit w/sporster replay

I was looking at getting this thing but my radio is the sportser replay which currently isn't supported by the SC-VDOC1. Are there any plans on ever making this radio compatible? How come every radio but the replay works with this kit?

coolin: Try contacting TSS Radio, one of our site sponsors. They do some wanderful customer service and should definately be able to answer your questions and perhaps suggest a modification which can get you around the issue.